* {
    box-sizing: border-box;
}

html {
    width: 100%;
}

body {
    width: 100%;
    position: relative;
}

.left {
    position: absolute;
    width: 20%;
    top: 4%;
    margin-top: 4%;
    left: 0;
}

.left ul {
    padding: 0;
    margin: 0;
    width: 100%;
    list-style: none;
}

.left ul li {
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    padding-right: 5px;
    text-align: right;
    line-height: 300%;
}

.left ul li a {
    color: black;
    text-decoration: none;
}

#search,
.gray {
    color: grey;
}

.active:hover {
    background-color: red;
}

.active>a:hover {
    color: white;
}

section {
    position: absolute;
    width: 55%;
    left: 20%;
    top: 2%;
    margin-top: 0.5%;
    padding-left: 2%;
}

h1 {
    font-size: 30px;
    width: 100%;
    border-bottom: 1px solid grey;
    padding-bottom: 7px;
}

.clear {
    clear: both;
}

.form input {
    margin-bottom: 5px;
}

.red {
    font-size: 18px;
    color: red;
}

.color {
    border-radius: 5px;
    cursor: pointer;
    background-color: red;
    color: white;
}

.color:hover {
    background-color: blue;
    color: yellow;
}

.left input {
    text-align: right;
    border: none;
    width: 60px;
    font-size: 15px;
}

#jilu {
    font-family: '黑体';
}
.index{
    margin-bottom:50px;
}
.index p {
    line-height: 20px;
}

.index p:nth-child(1) {
    color: red;
    font-size: 25px;
}
.imgs{
    border-radius: 50%;
    width: 50px;
    height:50px;
}